hi! i accidentaly update my 3gs to 4.0. then i started making things worst by using pwnage tool then setting up as new iphone couple of times... then when i decided to restore my old back up it was not on the list, on the itunes. i tried looking for my last back up on library folder/itunes/mobilesync/backup and there it was.. but it wasnt showing on the list of back up from the itunes. how can i use that backup and restore it to my iphone? btw, i back up the fone when it was already in 4.0